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### Question: What to expect before coronary artery bypass grafting?
### Response: Tests may be done to prepare you for coronary artery bypass grafting (CABG). For example, you may have blood tests, an EKG (electrocardiogram), echocardiography, a chest x ray, cardiac catheterization, and coronary angiography. Your doctor will give you specific instructions about how to prepare for surgery. He or she will advise you about what to eat or drink, what medicines to take, and what activities to stop (such as smoking). You'll likely be admitted to the hospital on the same day as the surgery. If tests for coronary heart disease show that you have severe blockages in your coronary (heart) arteries, your doctor may admit you to the hospital right away. You may have CABG that day or the day after.